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Formula: (UO2)2(OH)2Cl2(H2O)4
Chloride, uranyl mineral
Crystal System: Monoclinic
Specific gravity: 4.038 calculated
Hardness: About 1½
Streak: Very pale yellow
Colour: Yellow
Luminescence: Bright green–white fluorescence under 405 nm UV
Solubility: Soluble in water
RADIOACTIVE
Environments
Sedimentary environments
Hydrothermal environments
Uranoclite is a new mineral approved in 2021, and to date (June 2024) reported only from the type locality.
Localities
At the type locality, the Blue Lizard mine, Red Canyon Mining District, San Juan County, Utah, USA, uranoclite occurs as
tightly intergrown aggregates of irregular yellow crystals in a secondary
assemblage with gypsum
(MM 85.3.438-443).
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